org.jamesframework.core.problems.objectives.evaluations

Interface Evaluation

All Known Implementing Classes:

PenalizedEvaluation, SimpleEvaluation

public interface Evaluation

Interface of a solution evaluation produced by a problem definition. The only requirement is that the evaluation object can be converted into a double value that expresses the solution quality by calling getValue(). A predefined simple implementation is provided that merely wraps a double value (see SimpleEvaluation).

When implementing custom delta evaluations, the evaluation of the current solution of a neighbourhood search is passed back to the problem to evaluate a move. Knowing only the double value of the current solution's evaluation might not be sufficient to efficiently evaluate the modified solution. In such case, custom evaluation objects can be designed that keep track of any additional metadata used for efficient delta evaluation.

Author:

Herman De Beukelaer

Method Summary

Modifier and Type	Method and Description
double	getValue() Get the double value of this evaluation, expressing the solution quality.

Method Detail

getValue

double getValue()

Get the double value of this evaluation, expressing the solution quality.

Returns:

double value